package com.heima.kafka.listener;

import com.alibaba.fastjson.JSON;
import com.heima.kafka.pojo.User;
import org.springframework.kafka.annotation.KafkaListener;
import org.springframework.stereotype.Component;
import org.springframework.util.StringUtils;

@Component
public class HelloListener {

//    @KafkaListener(topics = "itcast-topic")
//    public void onMessage(String message){
//        if(!StringUtils.isEmpty(message)){
//            System.out.println(message);
//        }
//
//    }
@KafkaListener(topics = "user-topic")
public void onMessage(String message){
    if(!StringUtils.isEmpty(message)){
        User user = JSON.parseObject(message, User.class);
        System.out.println(user);
    }

}
}